A hat attachment clip includes a front portion having a first clip member and a second clip member, each having opposed proximal and distal ends. A first conductive-type clad layer is disposed on the substrate, and a second conductive-type clad layer is disposed on the first conductive-type clad layer. The multicast group membership table is configured to include a list of access terminal identifiers that have registered for the multicast session identified by the multicast session identifier.